Power shovel



T. GIBBY POWER SHGVEL Nov. 28, 1933.

Filed Nov. 15, 1952 4 Sheets-Sheet l I N VEN TOR. Mamas G/EQ A TTORNE Y.

T. GIBBY POWER SHOVEL Nov. 28, 1933.

v 4 Sheets-Sheet 2 Filed Nov. 15, 1932 INVENTOR. 77202724? Gibby ATTORNEY.

T. GIBBY POWER SHOVEL Nov. 28, 1933.

Filed NOV. 15, 1932 4 Sheets-Sheet 3 IVENTOR. 72022705 6166 A TTORNEY.

T. GIBBY POWER SHOVEL Nov. 28, 1933.

Filed NOV. 15, 1932 4 Sheets-Sheet 4 INVENTOR. 6/b6y A TTORNE Y.

I Patented Nov. 28, 1933 Q U DI I 1,937,015 I I POWER snovn, I I l v I Thomas Gibby, Denver, 16;; I l pplication No vemberv r rSerial- N0. 642,801 j cla m remit-1135)" This invention relates to'what are known as steam shovels or power shovels andparticularly that general type of machine of this character wherein the shovel is mounted upon a beam mov- 5 able longitudinally on the supporting frame, thesupporting'irame being ,mounted for rotatable movement upon a wheeled base.

The general object of my invention is to provide a shovel of this type in-which a boom or beam carrying the shovel is formed-of two telescopic elements, one of which carries the shovel, means being provided whereby the telescopic elements may be longitudinally extended to force the shovelinto the material being acted on 15. A further object is to provide meanswhereby;

the shovel carrying boom may be raised orlowered and whereby this boom may be swungaround a circle for unloading purposes and a further object is to provide a plunger or pusher mounted within the shovel and 'means'whereby this plunger may be forced forward withrelation to the shovel to thereby discharge the ma-- terial from the shovel. I

Other objects will appear in, the co urse of the following description. l

My invention is illustrated in the accompanying drawings, wherein: I I

Figure 1 is a side elevation of my shoveling and loading machine;

section; I v

Figure 3 is a section on the line 3- 3 of Figurel;- I} Figure 4 is a top plan view of the base; 7

Figure 5 is a fragmentary section on the line 5-5 ofFigure 4; r j Figure 6 is a longitudinal section through the boom or shovel supporting beam and the shovel itself; I

Figure 7 is a section on the ure 6; I Figure 8 is a section on the line 8 8 of Fig. ure6; M Figure 9 is a section on the line'9- 9" of Fig; ure6. I Y Referring to the drawings, it willfbe seen that the base of my loader includes the supporting beams 10. Upon these beams are mounted the forwardand rear shafts 11 and12. 'Ihese, shafts carry the wheels 13 over which the'endless link elements 14 pass, thus providing'a orawlerfby which the'loader ,is'mov'ed forward or rearward. Also extending through thebeams 10 is the in-, f termediateshaft 15 carrying wheels 16 whereby the endless elements14 are driven. Rollers 16a 40 line 7-7 of over the margin'of -Mounted upon the rear'of Figure 2 is'a top plan View thereof, partly fin I I V I l 4 1 ofmy invention; Within the b aseZS-is any suit able speed reducing mechanism and poweris i1- 29 by means ofv'afsprocketchain 30 to a sr ir ocket wheel '31 on'the speed-reducer and, fromthe are mount'ed upon the 'beams'lO and support the upperflight of the endless elements 14'. Mounted'upo'n the beams 10 isza circular base 17 provided withfthe arcuate rack-18 upon its upper face and' provided witha raised annular track 19 as'illustrated in Figure 5. Disposed above the base IL? is the turn table 20. This is-slotted" at a plurality of points and mounted above these slots are thesupporting rollers 21, one of which is shown in- Figure 5 which engages the circular track 19 and thus supports the turn table upon t i-I .I t I I I Guides 22 mounted upon the beainslO engage this turntable so as to hold ittothe track.

;-Ei itending upward from the turntable are the lateral uprights" 23 supported on the turntable in any suitable manner and connected; at. their upper endsby the transverse'spa'cingbolt 24; Mounted in suitable bearingsuponthe' turn table 201s a shaft 25 which carries upon it the toothed'wheels 2 6 which engage-with the arcuate rack '18.; shaftalso carries upon it 1a sprocktfwheel 27," I a I I the turn tablepis'a base 28 supporting upon it a motor29; -Any type of motor maybe; used but preferably vZliuse electric motor. 'Ihave not shown any details with regard to this matten'a's obviouslythepar ticular construction of-the motor, forms no part lustrated as being 'transmitted from the motor' speed reducer power is transmitted by means" I I of asprocket wheel 32 andthesprocket chain '33 to the'sprocket' wheel '27:" By thus driving this shaft in one direction or the other, the-turn table". ay-be rotatedin one direction or the other aroundfits icenterywhichpenter is the shaft 34'. It will be understoodthat clutches'are provided, aswill'be later stated;wheie'byjthe wheels 26 may be operatively connected tqpr; disconnectedv ro h is tt-j p. o 1 4 v i ounted upon the upper end of the shaft 34 is 'a'beveled gear wheel 35 andupon the lower endofjthis shaft a beveled gear' wheel 36 which engagesythe beveled gear wheel 37 mounted upon the shaft 15; 'I'his shaft'1 5 carries on'it a 0 sprocket wheelj38 which is engaged through a sprocket chain'3'9'with the, forward and rear shafts llrian'd 12 to thus cause the machine tof be driven'fdrward orrearward. 1

Power is transmitted from the shaft "25" t 9 l L the beveled gear wheel by means of a beveled gear wheel slidingly mounted upon the shaft 25. The gear wheel 401s splinedupon the shaft- 25 and is capable of being shifted into or out of engagement with the gear wheel 35 through any suitable gear shifter. V

' Mounted upon the uprights 23 is a shaft 141 on which is splined a gear wheel 42 and fixed on the shaft 25 is a gear wheel 43'." i The gear wheel 42 is capable of being shifted into or out of engagement with the gear wheel 43 by any suitable gear shifting mechanism, as for in stance, an ordinary gear shifting lever. When it is in engagement with the gear 43, it will drive the shaft 41. The shaft 41 also carries. upon it a drum 44 and carried upon the uprights 23 above the shaft 41 is a shaft 45 carrying upon it the two drums 46 and 47. V i t Pivoted upon the uprights 23 for vertical mo vement is'the shovel beam or boom section 48,

he. ection 4 b i ubular sllow and qrmsd passes, this. cable passing over a pulley 52 mounted upon upwardly and forwardly inclined-upfrights 53 in turn carried by the turn table at'its forward end. The'cable 51 passes over this pule.

ley 52 and then extends rearward to the drum 46 upon which it is wound. The forward extremity of. the boomv section 48 also carries upon it. the

, bracket 53 supporting a pulley 54 and over this pulley passes a cable 55 which at one end is connectedto the drum 44 and whichextends into the interior of the hollow beam or boom section 49 as illustrated in Figure 6 and atits rear end is connected to a clevis 56. i r 1 V The rear end of the beam section 49 is closed by-a plate 57 as shown in Figures. 6 and9, this plate having rearwardly extending eyes. 58 and through .these eyes passes adetachable pin, 59,

with which the clevis 56 is normally connected, the clevis extending through a slot 60 in theplate 57.: By rotating the drumi44, it willbe. seen that,

the section 49 inay be projected, -the section 49 being supported for longitudinal movement bythe rollers. 49aon the section 48and engaging within; the channel irons or beams for the section, 49;-

see Figure 8 ..,For the purpose of retracting this. boom sectiornl provide a cablefilattached to the rear wall of the shovel 62, this cable extending,

to the drum. 47. By thismeansQthe extensiblef section 49 may be projected or retractedand. by

meansof the, cable 51 the booms may be. raised or lowered. i

side but is open at its forward end and at its. top and for thepurpose of discharging. the con upon a longitudinally eXtendirig,rack bar. 64 which,

' ex ds r h t s ckfl or. t 'i o sl and into the hollow interior of thefbo'oinsection 49. This is supported upon the-guide brackets 65 and is formed on a portion of itsupper facewith,

the triangularteeth 6.6. The forward end of the boom or beam 49 is. longitudinally "s1ott dat;

' whole, either for transporting the machine from pl ace'to place or moving the machine as a whole up to its work, the sliding gear .40 is thrown into mesh with the gear wheel 35 which, as illustrated Eigure 3., transmits power to the driving shaft of the tractor. Of course, under these circumstances, the gear 43 is out of mesh with the gear Y42 and the gear wheels 26 are unclutched from the shaft, 25. These gear wheels 26 are loose upon the shaft'25 but have clutches of anysuitable character o en agi t em wi h. the sha 25 or isengaging hem hsrs m.-, When it is d ir d s Qpsrste he loader t e o mis lowered by means of, he ca e 51 h d um- 46 e n his clut hed. m. the shatt and ts o ation is esisted y a suitab h aks mechanism. T e,

shovel now being on the floor level; the drum 44 isengaged by its clutch with the shaft 41, the a he 3 b i at r wn into mesh. with th gear wheel 42. The rotation ,of the drum 44 acts .1",

hrough th cable 55 to. shi t the se tion. 491 m.- Ward. to t b fo t th shov l into the ear h, ea o cther ate a be ng; l ad d. I -excavated. W he sho l is aded" and any obstructi n such asa pit prop inunderground workings occurs tw sn e o nt of. loadin and. he p i i unlo di th lutch 0 dr m 7 is thrown. to conne t'th d um 4 he shaft 45. Thisv winds up on the cable 61 which causes a retraction, of the boom section 49 and of the shovel.

Th b om section 49 ispu lsd ck. int the arger oom ss ich :8 as ar as may-he n ssary t the turn table toward the right or left dependin upon which one of the gears 26 is clutched to the shaft Th shh e ha i been.- w ng; in o p.0- siticmv r'umoa ina if th 1000x1149 has been. re-

tracted too far to permit operation of; the disr a Y Y ch r sphine r 63-ss d'shcv mu t be pr j t d Theshovel is closed at its bottom, rear end and rom. b om 48 a suffi ien di tan crfaidistahc equal to the travel of plunger 63' to dischargethe hove T s rip od s released, allowing the latch 68 to engage the rack on the unloaderv arm 64, thus causingthe plunger to remain. in the fixed position. 'The cable 61 is then retracted. by m- 1 47. a d. sinc the plun er 63 is h ld stationary by the latch 68 and the shovel mpves. r arwa d. hscontents o the shovel 1.4..will be dischsifasdintc. the. car. r, other. rec pta le;

A. loadin mac i e clud ng sli nontin rames boom. o med. oftwo sectionsio e. pivoted; tofth ame smiths. other. being slidab y en aged; ith. the firs named Section nd; supportin a. shovel at. i s uter. end, means for. rai ing or. 1QW- sr ng the hccm,. msans for. projectin Qht' tmct:

ingthe slidable section, of, the boom, and; manu- 15;

ally controllable means for discharging the load from the shovel while the slidable section is being retracted including a plunger normally disposed within the rear end of the shovel, and manually operable means for holding said plunger from rearward movement when the shovel moves rearward or releasing the plunger for rearward movement with the shovel.

2. A loading machine including a supporting frame, a boom formed of two sections, one pivoted. to the frame, the other section having telescopic engagement within the first-named section and supporting a shovel at its outer end, a winding drum and cable for raising or lowering the boom, a second winding drum and cable, a pulley mounted upon the outer end of the pivoted section of the boom and over which the cable passes, the cableengag'ing with the rear end of the slidable section of the boom whereby when the cable is retracted, the slidable section will be projected, a

' drum and cable wound thereon, the cable operatively engaging the outer end of the slidable section of the boom whereby the slidable section may be retracted, a motor, manually controllable means for operatively engaging any one of said drums with the motor and disengagingthe other drums from the motor, and means for discharging the load from the shovel, comprising a plunger normally disposed within the rear end of the shovel, a rod extending rearward therefrom, and manually controllable means for holding the rod and plunger from rearward movement when the V shovel moves rearward or releasing the plunger for rearward movement with the shovel.

3. A loading machine including a supporting frame, a boom formed of two sections, one pivoted to the frame, the other section having telescopic engagement within the first-named section and supporting a shovel at its outer end, a winding drum and cable for raising or lowering the boom, a second winding drum and cable, a pulley mounted upon the outer end of the pivoted section of the boom and over which the cable passes, the cable engaging with the rear end of the slidable section of the boom whereby when the cable is retracted, the slidable section will be projected, a drum and cable wound thereon, the cable operatively engaging the outer end of the slidable section of the boom whereby the slidable section may be retracted, a motor, manually controllable means for operatively engaging any one of said drums with the motor and msengaging the other drums from the motor, and meansfor discharging the load from the shovel, comprising a plunger normally disposed within the rear end of the shovel, a rod extending rearward therefrom, and manually controllable means for holding the rod and plunger from rearward winding drum and to the first-named section of prising teeth on the rod, a latch mountedupon the pivoted section of the boom, and adapted to engage said teeth and hold the plunger and rod from movement, and manually operable means for raising or lowering the latch.

4; A loading machine of the character described, including a turn table, a base upon'which the turn table is mounted, a tractor to which the base forms part, a motor mounted upon the turn table, gear wheels carried by theturntable and oper-' atively engaging the base to rotate the turn table thereon, manually controlled means for connecting the motor to said gear wheels, vertical sup-" ports mounted upon the turn table, a boom formed in two sections, one of these sections being pivoted to the-vertical supports for motion in a. vertical plane,'the other section having telescopic engagement with the first named section and carrying a shovel, a winding drum, a cable connected to the the boom whereby the boom may be raised or lowered, manually controllable means for connecting the motor to said drum, a second drum, 9. cable connected thereto and to the shovelwhereby the telescopic section of the boom may be retracted, a pulley mounted upon the pivoted section of the boom at its outer end, acable passing over. said pulley and connected to the rear end of the slidable section of the boom, a winding drum over which said cable passes, manually con-'- trollable means for connecting this last named winding drum to the motor or disconnecting it therefrom, a plunger mounted within the rear end of the shovel, a plunger rod extending into the movable section of the boom and having teeth, a latch mounted upon the forward end of the pivoted section of the boom and extending'into said movable section and engaging said teeth, and

to the frame and the other section being slidably engaged with the first named section and supporting a shovel at its outer end, means for jraising or lowering the boom, means for projecting or retracting the slidable section of the boom, a plunger normally disposed within the rear end of the shovel, a rod extending rearward therefrom, and manually controllable means for holding the rod and plunger from rearward movement when the-shovelmoves rearward comprising a latch mounted upon the pivoted section of the boom and adapted when engaged with the plungerrod to hold the plunger and rod from rearward movement, and manually operable means for raising and lowering the latch. g I r I THOMAS GIBBY. 

